Electric welding-machine.



R. G. PIERCE.

ELECTRIC WELDING MACHINE. ,APPLIOATION FILED NOVM, 1912.

Patented Apr. 22, 1913 WJTNEE' EE mzT/ENTQR.

91c. Wj? I be hereinafter more fully described.

NITED- STATES Parana ()FFHJE.

ROBERT CLARK- PIERGE, 0F CINCINNATI, OHIO, ASSIGNOR '20 THE TOLEDG ELECTZ LIC WELDER COMPANY, OF CINCINNATI, GHIQ, A CORPORATIQII 01? OER EI "ICTRIC WELDING-MACHINE To all whom it may concern:

Be it known'that I, ROBERT (LARK Pisucn, a citizen of the" UnitedStates, and a resi-- dent of Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful El.ectric W elding- Machine; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the artto which it appertains to make and use the same, referencebein had to the accompanying drawings; an to the characters of reference marked thereon, which form a part of this specification.

This invention relates to electric welding machines, and has for its object the provision, in a machine of this character, of a plurality of die-carrying arms or horns which are mounted for relative swinqing or other suitable movements ic-enable them. to be'selectively moved'into or out of operative welding osit-ion, as the form. of the work being we ded may require, such anus having different shapes or characteristics, as will The invention is fully described in the following specification, and while, in its broader aspect, it is capable of embodiment innumerous forms, a preferred embodiment thereof is illustrated in the accompanying drawings, which is a side elevation of an electric welding machine with parts broken away.

Referring to the drawings, 'l'designates the frame of a machine of this character, which may be of any suitable shape orsize and has the customary upper die-carrying horn 2 projecting laterally from its upper end, which horn is provided, in the present instance, at its outer end with a head 3 in which a plunger at, carrying the upper movable die 5," is mounted. The reciprocatory movementsof the plunger can be controlled by a lever 6, acting a handlever, or such lever can be connected by a rod 7, inter mediate lever 8 and link 9 to a foottreadle 10. Any other: control means however, may be provided for the plunge; t, as is wel understood in the art. A transformer 11, which is mounted within. the frame 1., has its secondary connected by a lead 12 with the die in the usual or any suitable manner.

In carrying out the feature of inyinveption I-have shown the machine as provided Specification of Letters Patent.

Application file-:1 November 14, 1912.

Patented Apr. 2'2, tutti.

Serial No. 731,315.

with two lower die-carryin horns or arms Band 14, which are shaped to adapt them for different conditions of use, and mounted for coaxial horizontal swinging; movements in a bracket 15, that is bolted br otherwise suitably attached to the "frame 1. A. diev 16 is carried by each horn in proper positidn to be swung with the horn into proper register with the upper die 5, the dies swinging in a common plane. The horn 1-3, which is the lower one of the set, is of L-form with its free end projecting upward to adapt it to be projected up into il-bOX or other article, as for welding the bottom thereof, While the other born 14 is preferably straight or substantially so to enable it to be projected horizontally into a box or other article, as for welding the side seams or other side parts thereof.

The inner ends of the,horns 13 and 14 are shown as having journal parts 13 and 14 respectively, which are mounted in asuitable bearing in the bracket 15, with the lower horn projecting from its journal through a recess or incut 15 in the bracket. The upper horn 14 projects from the upper end of its journal over the bracket, and the two journals are held, against axial move ments relative to the bracket by a bolt 17, which projects axially through both journals and through the bracket boss lS'upon which the lower journal rests. The bracket 15 is suitably insulated from the frame, and has an arm or boss 19 projecting from its upper end and directly bolted or otherwise suitably connected to the: secondary of the transformer 11..

It IS evident in the weldingot boxes-or similar articles that either horn 13, M can be'swung into operative position as it may be desired to weld dili'erent .ortions of an article, as for instance the si e and bottom portions thereof, thus materially facilitating thewelding of such articles; and also that the number and shapes of the horns and the forms of the dies carried thereby can bc varied as the conditions of use may require. I

upper die, a plurality of horns movable l8lative to said upper {lie and to each other, and. a die carried by each horn and movable thereby into register with the upper die.

2. In a machine oi the class described a plurality of die carrying horns of different shapes mounted for relative movements to enable the (lies carricol thereby to be selec tively placed in register with the upper die.

In a machine of the classdescribes a plurvility of (lii'l erently shaped swingi i'gly mounted the carrying horns capable of 'be ing selectively moxecl'tc operative position.

In a machine of the class clescribecl, aplurality of differently shaped die carrying horns mounted for coaxial swinging move" ments to enable them to be selectively placed. in operative position. 5., A. machine of the class described having a weldifig die and a plurality of relatively movable horns carrying dies for opp said first die and selectively movable to place the (lies Carrie-cl thereby in register with said first (lie, one of said horns being substantially straight anti the other or", angled form.

6. In a newline of the class described, frame a bracket carried by said. frame, and a plurality of the carrying arms carried for relative movements by saicl oraclietu 7. In a machine of the classdescriberl, a

lessees frame, a bracket carried by sairl frame, anti a plurality of die carrying arms ai ried for horizontal swinging movements by said bracket. a

8. In a machine-of the class ol(ascribed a frame, a bracket attached tl'iereto and a phr' rality of differently shaped die carrying horns carried by said bracket for relative coaxially swinging movements.

9. lo a machine of the class described, a frame, a transformer, a bracket attached to "the frame and having direct connection with the secondary of the transformer, and a p111 rality of clifierently shaped die carrying horns carried for relative swinging movements by said bracket.

10. In a machine of the class described,

an upper horn, a die carried :tor vertical movements relative thereto, a plurality of lower (lie-carrying horns mounted for relative swinging movements to permit the selective placing of their dies in register with said vertically movable die.

In testimony whereof, have hereunto signed my name toithis specification in the presence of two subscribing witnesses.

' RQBEBT Gl'lAltlQ PIERCJ.

Witnesses Norr r/lARMALo, FRANK K mmie. 

